CVE-2023-4273
Kernel: exfat: stack overflow in exfat_get_uniname_from_ext_entry
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
A flaw was found in the exFAT driver of the Linux kernel. The vulnerability exists in the implementation of the file name reconstruction function, which is responsible for reading file name entries from a directory index and merging file name parts belonging to one file into a single long file name. Since the file name characters are copied into a stack variable, a local privileged attacker could use this flaw to overflow the kernel stack.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | Medium6.0 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Modified | 3.1 | Medium6.7 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.65% · top 49% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.0.
Weakness
Affected products
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:5.14.0-362.8.1.el9_3 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:5.14.0-362.8.1.el9_3 – < *
Red Hat · Red Hat Enterprise Linux 6
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 7
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 7
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 8
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 8
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 9
All versions: affected
References (12)
- RHSA-2023:6583 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://access.redhat.com/security/cve/CVE-2023-4273 (opens in a new tab)vdb-entryx_refsource_REDHATx_transferred
- RHBZ#2221609 (opens in a new tab)issue-trackingx_refsource_REDHATx_transferred
- https://dfir.ru/2023/08/23/cve-2023-4273-a-vulnerability-in-the-linux-exfat-driver/ (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/344H6HO6SSC4KT7PDFXSDIXKMKHISSGF/ (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/3TYLSJ2SAI7RF56ZLQ5CQWCJLVJSD73Q/ (opens in a new tab)x_transferred
- https://security.netapp.com/advisory/ntap-20231027-0002/ (opens in a new tab)x_transferred
- https://www.debian.org/security/2023/dsa-5480 (opens in a new tab)x_transferred
- https://www.debian.org/security/2023/dsa-5492 (opens in a new tab)x_transferred
- https://cert-portal.siemens.com/productcert/html/ssa-831302.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-794697.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-4273)Record last updated .